Question about 1987 Buick Century

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Fuel pump issue too

Replaced the fuel pump already, fuse in the glove box is good. No 12V power at the harness connector for the fuel pump when turning ignition key to "ON" position or when cranking. Fuel lines are clear, new fuel filter too.

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The voltage to the pump comes from the distributor and this circuit requires checking, maybe the earlier fuel pump was OK too, but not receiving the current as now..............sodeep

Posted on Jun 16, 2009

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2 Answers

1988 Pont. Bonn.3.8 replaced fuel pump relay and replaced blown fuse behind glove box still pump doesn't work. Gas gauge is pegged on full does this mean anything


Bad ground. It runs to the front of the car. You can cut it and ground it to the body. Make sure the battery to body ground is good also.

Jul 12, 2015 | Cars & Trucks

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Where is the fuel pump relay and fuse located on a '91 Buick Park Avenue? And is there a reset for the fuel system?


fuel pump relay: on relay center,behind glove box, 2nd column of relays, 2nd one from the top.
fuse: the wiring diagram says that it is fuse #6 on/by?? the relay center.
there should be a fuel pump test connector taped to the harness by/behind the battery. probably single red wire with a black or white connector. apply 12 volts to connector to test fuel pump.

Apr 03, 2014 | Cars & Trucks

1 Answer

I have a 1997 Chevy Venture. I replaced the fuel pump, and relay. Checked all the fuses, and they were good. We then proceeded to tear the interior apart and check all the wring by tracing from pump to...


Well you have already confirmed there is a short in the harness or a connector.
If you can't find it, the next best thing would be to run a new wire from the pump relay back to the connector at the gas tank.

Sep 27, 2012 | 1997 Chevrolet Venture

1 Answer

My 97 saturn cranks but will not start .to get it running i'd give it a little gas and it would turn on but now it seems that doesnt even do the trick.I just got the starter rebuilt on it so that shouldnt...


I just had this same nightmare on my bosses 97 SL1. After literally weeks of headaches, I finally found the problem. The fuel filters, (there are 3, 2 in tank, and 1 in line with the firewall on the drivers side) were completely plugged. Replaced the fuel pump as well, since it was under specs. After all this it had what you are describing, come to find out that the fuel pump relay (interior fuse box) was cooked as well, probably from the fuel pump straining to pump through the plugged filters. After further checking, come to find that 12v was intermittenly reaching the fuel pump.

After some trouble shooting I come to find that the interior fuse box has many fuses with no power at all (mainly the accessory circuit, lighter, dome light, etc). I ran a fresh wire with an inline fuse from the battery to the cigarette lighter 12v + (Orange wire) to power the circuit and the car fired right up. Saturns are known for their crappy wiring. So if your dome light and cigarette lighter are not working it's possible that you have the same issue. I fully inspected the fuse box (completely disassembled) and could not find any short or open circuits, but those cheap "fuse adapters" that go from the harness pins to the fuses inside the fuse box were all corroded). I cleaned all up and still no power. I could not find a single burnt wire either anywhere in the interior or exterior harness. My boss had taken this car to several shops and not one shop was able to fix it (after spending $350 on parts with "guesses").

I hope this helps and does not confuse, it was a tough troubleshoot, and maybe my experience can save you a lot of money and time.

Mar 07, 2011 | 1997 Saturn SL

2 Answers

Fuel pump will not run in car but will on the


You need to cuss a whole lot more than twice. A voltage meter would be more useful in determining the actual voltage making it to the fuel pump. Something around 12v DC would be appropriate. If you are not getting at least 12v, you need to check the battery, the starter relay, and the fuses to the fuel pump for any corrosion, and make sure you are getting at or near 12v DC.

Feb 14, 2010 | Daewoo Lanos Cars & Trucks

1 Answer

Where is the fuel pump reset button the van will turn but acting like no fuel


There is not an fuel pump reset button. There is however an Automatic Shutdown Relay that acts as a fuel pump shutdown. On the 1998 Model: It should be located in the Junction Box located under the leftside of the dashboard There should be a cover over the top of the Junction Box. On the backside of that cover is the identification and location of the Relays and Fuses. If there is no cover, your Owner's Manual should have a schematic identifying the location, position, and type of Relay and Fuses. There should be additional Fuses involving the Fuel Pump. Make sure you not only check the Relay and Fuses to see if they are good, also check with a Voltmeter to check for voltage, with the Key in the "ON" (not start) Position; it should read approximately 12v,

With approx 12v present at the Relay and Fuses, one quick way to determine if there is Voltage to the Fuel Pump:
1) With a Partner behind the wheel. Take the Gas Cap off and place your ear up close to the opening of the Gas Filler Tube. Have your Partner turn the Key to the "ON" (not Start) Position. You should be listening for a humming sound (for 2-3 seconds)meaning the Fuel Pump is getting power (volts).
2) If there is no "humming" or you are not sure, get underneath the Van next to the Gas Tank and have your Partner do it again. Listen for a humming.
3) If there is definitely no humming present with good fuses, relays and voltage, then most likely the Fuel Pump is bad.
4) However, a lot of Fuel Pumps have been replaced only to find out the Pump was good, but the electrical wiring harness was bad and the real culprit.
5) You will have to slightly lower the Fuel Tank to gain access to this electrical connection.
6) After you disconnect the electrical connection, using the Voltmeter check for approximately 12v coming from the Wiring Harness/Connector.
7) Inspect the Wiring Harness/Cnnections for any signs of burns, melting, or shorting. Repair this wiring harness before deciding to replace the fuel pump needlessly.
8) After repairing the Wiring Harness/Connection: Replug it back in and recheck the Fuel Pump one last time.
9) If still no "humming" the Fuel Pump needs to be replaced.

If there is humming from the Fuel Pump, then there are four possible problems.
a) Fuel Filter (when was the last time it was replaced?) It could be clogged, prohobiting fuel flow.
b) Fuel Regulator. Located on the Fuel Rail where the Fuel Injectors are. If there is a presence of Gas in the Vacuum line (the only rubber line on the Fuel Regulator) attached to the Regulator, then the Diaphram of the Fuel Regulator is broke and Gas is not reaching the Fuel Injectors. Instead it is being dumped into the Intake. Replace the Regulator.
c) Fuel Injector Circuitry problem. Using an Auto Stethoscope: Place the Stethoscope end in each individual Fuel Injector. Have your Partner attempt to start the Van. If there is no evident and rythmic "clicking" (fuel injector's gate opening and closing) then the Fuel Injector is faulty or the electrical connection is faulty. To check to find out which is faulty, switch Fuel Injectors (one clicking with one not clicking) and recheck for the clicking.
d) Clogged Fuel Injectors. With the Fuel Rail (with the Fuel Injectors) removed out of the engine. Place clear Plastic tubing over the nozzle ends of all exposed Injectors. With a Partner Starting the Engine, look for
(1) Fuel Flow (presence).
(2) Fuel Spray (pressure).

Let me know if this helped, or if you have any additional information or questions. Feel free to contact me at FixYa.com!

Feb 13, 2010 | 1998 Plymouth Grand Voyager

1 Answer

2005 Rav4 showing p0627 where is sensor sited


Your have a Fuel Pump A Control Circuit /Open try these possible solutions. Using a OBD II scan tool. Free use at Autozone. Check operation of fuel pump. Remove the glove compartment. Turn the ignition switch to ON. CHECK: Connect terminal FC of the ECM connector and the body ground. Check for the fuel pressure in the inlet hose when it is pinched by hand. OK:There is pressure in the fuel inlet hose. At this time, you will hear a fuel flowing noise .OK. Check for starter signal circuit Check for ECM power source circuit, if no good Repair or replace.OK Check circuit opening relay, if no good Replace circuit opening relay.OK. Check voltage between terminal FC of ECM connector and body ground to do this Remove the glove compartment Turn the ignition switch ON. Measure the voltage between terminal FC of the ECM connector and the body ground OK: Voltage: 9 – 14 V OK. Check for open in harness and connector between EFI main relay (Marking: EFI) and circuit opening relay, and circuit opening relay and ECM. Check fuel pump, if no good Repair or replace fuel pump.OK. Check for open in harness and connector between circuit opening relay and fuel pump, and fuel pump and body ground, if no good Repair or replace harness or connector.OK Check and replace ECM. Good luck and I really hope this solves that problem you are having. Please rate me. If you need further assistance you can always ask me. wutxtye0rjd9d9ekmodqt1eoxkvn9hr9qjz1l3dabggyud7sdgr36czsrfxqenadhnijx9nfayi+sz1sug0aaaaasuvork5cyii=

Apr 25, 2009 | 2004 Toyota RAV4

1 Answer

Power in fuse box for fuel pump no power at wire harness by fuel


check the fuse and relay for the fuel pump in the engine compartment fuse box near the battery... as well as the fuel shut off switch in the back (trunk) part of the vehicle

Robert

Please rate this solution thanks

Jan 31, 2009 | 1992 Chevrolet S-10 Blazer

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